Singer Rufus Wainwright asked his friend Helena Bonham Carter to star in his new music video and he convinced the British actress to strip off for the racy promo.The musician wanted a video to remember for his latest single Out Of The Game, and the Harry Potter star had no qualms about being filmed in her underwear. He tells Britain's The Sun, "It features the two of us being naughty in the library. We have been friends for years. Not only is she very beautiful, very glamorous, but she is also incredibly funny. "At the end of the video she is basically wearing a bra. So I very much appreciate her friendship for furthering my career."